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Light 12-Glazed Window on the Horizon, at R-38

In the USA, most windows are probably single- or double-glazed and some builders will use triple-glazed windows for Passive House and other high-performance homes.  But in Hanover, Germany, a 12-glazed window prototype by Mariusz Paszkowski and Antoni Kostka was the star of the recent International Passive House Conference, according toDer Standard.  Check out these windows with aerogel!

The two scientists, in conjunction with SUPERWINDOWS, showcased INVIS160stack and INVIS160tweed, and both of the prototypes are about 160 mm thick, though they weigh no more than a double- or triple-glazed window unit.

INVIS160stack (above) is an insulated glass unit with two external glass panes that sandwich 10 layers of specially coated film without materially compromising visibility.  The inventive window makes it possible to achieve European U-values of 0.15 W/m2K, or the U.S. equivalent of R38 (R = 1/(.15/5.678)).

INVIS160tweed (below) is similar to INVIS160stack except that what’s sandwiched between two glass panes is several layers or sheets inclined at a 45-degree angle (as opposed to parallel to the external panes).  This approach makes it possible to achieve European U-values of 0.05 W/m2K, or the U.S. equivalent of R113 (R = 1/(.05/5.678)).

Of course, there’s a lot of work and investment to be done before these are suitable for commercial production, so there’s no pricing or availability yet.  But watch this space for window innovation.

Original Post from Jetson Green
Light 12-Glazed Window on the Horizon – Jetson Green

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Costs of Custom Homes

The first thing most people want to know is: What does it costs to build a 3000 sqft custom home in the Atlanta, GA. market?  The first thing you have to calculate is the square footage you want.  Once you have that, the numbers below give you a good starting point.

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